Churn and butter-worker



A A. WILLARD.'

Churn. y Patented Sept. 23, 1851.

"UNITED 'STATES 'PATIENT OFFICE.'

ASA WILLARI), OF BOSTON, MASSACHUSETTS.

CHURN AND BUTTER-WORKER.

Specification of Letters Patent No. 8,382, dated September 23, 1851.

To all whom t may concern.'

Be it known that I, ASA WILLARD, now re siding in Boston, of the county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements in Machinery jfor Manufacturing Butter; and I do hereby declare that the same are fully described and represented in the following specification and accompanying drawings, letters, figures, and references thereof.

`Of the said drawing Figure l, denotes an external side elevation of my improved butter making engine. Fig. 2, is a vertical, central, and longitudinal section of it.` Fig. 3, is a vertical central and transverse section of it.

In the said drawing A represents the reservoir for containing the cream, the bottom a, of the said reservoir being made semicircular or the arc of a circle in its cross section in order to adapt it to the revolving dasher, which is seen at B. The said bottom is formed of thin sheet metal, and is surrounded by a chamber or space C, in which cold or warm water may be put for the purpose of either increasing or diminishing the temperature of the cream at pleasure. The said chamber is provided with one or more lids 0r doors placed in its upper part, as seen at b, c, and it also has a discharge faucet extending out of its lower part, as seen at d. The main reservoir has also a discharge faucet, as seen at Each head of the dasher is composed of two bars e, f, which instead of being ar- 'ranged to cross one another at right angles,

are made to do so at acute and obtuse angles, as seen in Fig. 3. They are connected together by two or more cross bars g, 7L, extended from one head D to the other E. The two ends 0f each of the bars, c, e, of each head, are curved in opposite directions, and made to support curved floats a', 7c, whose transverse curve or shape is seen in Fig. 3, and they are curved in this manner in order to force the cream toward the center of the machine during the revolutions of the dasher in the direction of the arrow Gr, and also to aid in separating the butter from the butter milk, and gathering the former together, when the dasher is rotated in the opposite direction.

A movable float I-I or I, is also applied to each float, z', 47e, in the position as seen in Fig. 3, it being hinged or jointed to the dasher heads, in such manner, as to be ca- ZIXGS.

the dasher.

pable of either assuming and maintaining Gil the position seen in the said figure or that as represented by dotted lines. These movable fioats when they stand open, and while the dasher is revolving in the direction denoted by the arrow Gr, deflect the currents 1 1 of cream set in motion by the curved'floats z', 7c, or change their direction, so as to pro. duce thorough and effectual agitation, and oxygenation of the cream.

Fig. 4 denotes a` side view of the dasher, wherein it will be seen that the front or extreme outer surface of each float c', his curved longitudinally, as seen at mi, n, 0.

The object of such curve will be hereinafter ,y

particularly explained.

The bars f, f, of the dasher, serve to 'support two revolving fluted rollers R, S, which should be so connected to the bars as to be capable of a free revolution on their the iiutings p, Q, 1, s, t, are not to be made of an equal size in cross section but are to be -of an unequal width, at the chords rof their curves.

While these fluted rollers serve to agitate the cream they are also for the purpose of scoring or indenting the butter when laid upon the curved bottom of the machine and working the salt into it, while the dasher is rotated in a direction the reverse of that exhibited by the arrow G. While each of them thus throws it into ridges, the outer curved surface of the succeeding floats z' or 7c, on being immediately afterward brought into contact with the butter, smooths down or takes out such ridges, and in consequence of the longitudinal curve, of the float, a gathering of the butter will take place, in such manner as to leave the butter crowning in the middle. The extreme ends of each Hoat z', 7c, should be made to run nearly if not quite in contact with the curved bottom of the machine, while the middle of the float in consequence of the longitudinal curve of the said float runs at a greater distance from the bottom. The object of such a longitudinal curve of the fioat is to prevent the butter from gathering on and adhering to the ends of the cream reservoir as well as on those of The layer of butter is thus curved or thrown up gradually from its ends toward its middle. Thus it will be seen that by the conjoint action of the fluted rollers and the floats the butter is wrought or made to move in two opposite directions,

They arefluted longitudinally and ci:

.while it is spread on the bottom of'the machine, and this peculiar operation most thoroughly and effectually commingles the salt with it.

By placing each fluted roller as near as can be to the outer curved surface of the curved float i or 7c without interference with the opening of the movable or hinged iioat of such fixed float, the distance between such curved roller, and the other float is greater than it would be were the arms of each of the dasher heads arranged at right angles to one another. Consequently after the spreading action of each floaton the butter, a greater spread or surface of butter is exposed to the salt solution before the action of the fluted roller takes place than there would be were the arms arranged at right angles to one another or in other words, were each of the iuted rollers placed equidistant between the two oats z', lc.

The dasher is revolved by means of a crank U, which is attached to one end of a short shaft V, that keys or is fixed into the end of one of the heads of the dasher, and passes and rocks through a stufing box W, xed to the side of the reservoir. The other head of the dasher has a small journal fv, projected from its center and made to rest in a bearing w, screwed or otherwise properly fixed to the inner side of one end of the reservoir By means of my improved machine, butter can be manufactured from cream, salted and afterward gathered up and the butter milk thoroughly worked out, and this without any necessity of to-uching the butter by the hand. I am aware that in some respects it resembles some other machines or engines for such purpose, but still such parts as constitute such resemblances form no portion of my invention or improvements, and what I claim, which lare as follows.

That is to say, I claiml. The combination of one or more fluted rollers R S, with one or more floats t', 7c, to operate so as not only to aid in the process of separating the butter from the cream, but afterward, and when the motion of the dasher is reversed to throw into ridges the butter spread on the bottom by the float.

2. And I claim the improvement of giving a longitudinal hollow or curve to the external surface of each float 2', la, for the pur-V pose of gathering the spread butter toward its middle, and preventing the butter from adhering to the ends of the reservoir as specified.

'In testimony whereof I have hereto set my signature this seventeenth day of May A. D. 1851.

ASA WILLARD.

Witnesses: R. H. EDDY,

BENJAMIN EDDY. 

